单项选择题

Panting frames are located in the（）.

A.after double bottoms
B.centerline tanks on tankers
C.fore and after peaks
D.forward double bottoms

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No deduction is allowed for the（）mess-room in ships having passenger accommodation，which are not also provided with a passengers’ mess-room.

A.officer
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C.officer's
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Metal plates that cover the top of the hawsepipe are called（）.

A.footings
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Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.

A.reduce the free surface effect and raise the KG
B.not have any effect on free surface and raise the KG
C.reduce the free surface effect and lower the KG
D.not have any effect on free surface and lower the KG